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  1. #1
    New Member
    Join Date
    Jul 2012
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    4
    Location
    PA
    Tractor
    International 444

    Default International 444 hydro system overheating

    So after about 2 hours of heavy field mowing my hydro lines get real hot and after about 4 hours of operation thers a noise under seat, even when impliment is lowered it sounds like hydro system is straining as if ther was still a load on it. Also it will not lift implament up unless I have the rpm"s above 1000 but only when its hot. When cold it lifts fine at idle. I have checked orfice screen and suction screen and they are both clean. I had hydro pump apart a year ago to replace gaskets cause I had engine oil in hydro system and the pump looked ok to me . Any help would be much apriciated thanks in advance

  2. #2
    Super Member
    Join Date
    Apr 2000
    Posts
    6,233
    Location
    central New York
    Tractor
    all makes and models

    Default Re: International 444 hydro system overheating

    My htoughts are that you might have a valve being held open or under pressure when not needed. This might happen do to hitch adjustments or just something sticking do to a little extra slop do to use and age.

    They will run up to 200 normally and like with all oils and pumps when they are cold is when they normally work the bestas the parts are smaller and the oil is thicker.

  3. #3
    New Member
    Join Date
    Jul 2012
    Posts
    4
    Location
    PA
    Tractor
    International 444

    Default Re: International 444 hydro system overheating

    Thanks Art, Thats what I was thinking my relife valve stuck open or it needs a shim .

  4. #4
    Platinum Member
    Join Date
    Nov 2007
    Posts
    564
    Location
    South Carolina

    Default Re: International 444 hydro system overheating

    Quote Originally Posted by 01dually View Post
    Thanks Art, Thats what I was thinking my relife valve stuck open or it needs a shim .

    Did you do anything to fix it?
    IHC 424 Diesel
    Ford 917 Flail Mower

  5. #5
    New Member
    Join Date
    Jul 2012
    Posts
    4
    Location
    PA
    Tractor
    International 444

    Default Re: International 444 hydro system overheating

    The only thing I did was set my draft countrol to the heavey position and that seamed to resolve the problem. The brushog that i use for that tractor is very heavy and had the draft set mid way between heavy and light.

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